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- UNITED STATES PATENT OFFICE.

HENRY BAILEY, OF NEW YORK, N. Y.

PULVERIZER.

SPECIFICATION forming part of Letters Patent No. 275,566, dated April10, 1883.

Application filed December 1, 1882. (N o model.)

To all whom it may. concern:

Be it known that I, HENRY BAILEY, of New York, in the county and Stateof New York, have invented a certain .Improvement in Pulverizers, ofwhich the following is a specification.

This improvement relates to pulverizers wherein the work is performed byopposing currents of air, steam, water, or other gas or fluid, or by onecurrent acting in conjunction with a suitable abutment.

The improvement consists in a nozzle for the discharge of a gas or iuid,provided with a concentrator extending beyond its end,for preventing-theeffect of the current issuing at the nozzle from being dissipated beforeperforming its work.

The improvement also consists in the combination,in a pulverizer, withtwo oppositelyarranged nozzles for the discharge of a gas or iiuid,provided with concentrators extending beyond their ends, for preventingthe effect of the currents issuing at the nozzles from being dissipatedbefore performing their work, of two chambers receiving material to bepulverized, and into which the nozzles extend,tWo hoppers for supplyingmaterial to said chambers, and two chutes leading from said chambersinto an intermediate pulverizing-chamber.

The accompanying drawingrepresen ts a central vertical section of apulverizer embodying my improvement.

A designates a chamber wherein the pulverizing is performed. It may bemade of castiron or other suitable strong material, and is supportedupon standards or columns A. The material to be pulverized is suppliedto it by means of hoppers B, arrangedone on each side of it. Thesehoppers communicate with chambers O, which lnay be formed integralwiththe chamber A in one casting. Then the hoppers B may be madeseparately from the chambers C and fitted into them.

The material to be pulverized passes from thehoppers B into the chambersU, and thence through chutes D into the chamber A. The chutes D arepreferably made separate from the chambers C and detachably securedthereto. They may then be made Yof steel, and can be renewed whendesirable. I have shown them as titted into sockets and secured there byscrews.

The hoppers B are supplied with the mate- Y rial to be pulverized bymeans of a hopper, E, which is bifurcated at the lower portion,so as toextend into both the hoppers B. Material maybe fed into the hopper E byany suitable means.

G designates nozzles for the discharge of the gas or iluid whereby thepulverizing is performed. They extend close to those ends of the chutesD which communicate with the chambers G. As here shown, they are screwedinto chambers H, which may be made integral with the chambers A and C inone casting, and have their outer ends closed by screw-plugs l. Pipes Jlead to these chambers H from a main pipe, K. Steam, air, or water, orother gas or liquid under pressure is conducted to the pipe K, andpasses thence through the pipes J to the chambers H, whence it issuesthrough the nozzles G intwo opposing currents. The material in thechambers U is carried through the chutes D in two opposing streams, andby forcible impact and the force of the currents is pulverized. Thelighter particles pass up a flue, L,which com municates with the upperpart of the chamber A, and the heavier particles fall through anaperture, M, in the lower part of the said chamber.

It will be observed that beyond the outlet ends of the nozzles G thereare devices N, which internally are considerably larger than the outletends of the nozzles,A and of cylindric form or of a slightly taperingform. These devices prevent the currents issuing from the nozzles fromdispersing or expanding, as they would otherwise be liable to do, andhence concentrate their force. For this reason l term themconcentratorsi7 These concentrators may be formed integral with thenozzles or made separate therefrom and attached in any suitable manner.By means of these devices the effect of the currents is greatlyincreased.

If desirable, one of the chambers C, with its hopper B and otherappurtenances, and the corresponding nozzle, G, with its appurtenances,may be omitted, and then an abutment of metal, stone, or other suitablesubstance will be used opposite the remaining nozzle, against which IDGthe material to be pnlverized will be dashed. I have represented suolian abutment by dot-ted lines :it 0.

VVhatIclaini as my invention, and desire to secure by Letters Patent,is-

1. In :t pnlverizer, n nozzle for the discharge of :t gas or Huid,provided with a concentrnitor extending beyond its end, for preventingthe effect ofthe current issuing at the nozzle from being` dissipatedbefore performing its work, substantially :is speeied.

2. ln a pulverizer, the combination, with two oppositely-arrengednozzles for the discharge of a, gas or fluid, provided Witheoncentrators extending beyond their ends, for preventing the ei'eotofthe currents issuing at the nozzles from being dissipated beforeperforming their Work, ot' two chambers receiving' material to bepulverized, and into which said nozzles extend, two hoppers forsupplying material to said chambers, and two chutes leading from seidehem bers to an intermediate pulverizingchamber, substantially nsspecified.

HENRY BAILEY.

Witnesses:

T. J. KEAN, JAMES P'. owEN.

